Plane.



C. E. MITCHELL & E. A. SCHADE.

PLANE.

APPLICATION FILED MAY 6,' 1902.

930,307, Patented Aug. 3, 1909.

The upright portion or back of the yoke eX- tends upward and is securedat the downwardly bent portion 36 to the frog at a point just above theopening 20 in the face of the frog. rlhrough this opening access may behad readily to the securing screws 31 in the base. Y

When the plane iron and plate are adjusted in position and secured tothe frog by means of the cap iron 6 and cap screw 61, the frog issubjected to stresses of considerable amounts. To provide for meetingthese stresses it is desirable that the sides ofthe frog should be bentdown and depressed to form reinforcing iianges. It will be noted thatthese flanges as shown are substantially triangular in form andcorrespond in depth from the face of the frog very closely to thediagram of changes in bending moments which would occur in a beam loadedin the center and supported at the ends, which is the case that we haveherein. The cap iron 6 is provided with a cam lever for effecting therequisite pressure between the cap and the plane iron or the plane ironplate for holding the parts in place.

The upper end of the-bearing face of the frog is depressed in atruss-like form at 29 to rovide a recess in which the lower end of theaterally adjusting lever 9 may be pivoted at 92 and operate. The end ofthis lever 9 may be provided as is usual in planes of this characterwith a disk 94 which cooperates with a slot 40 in the plane iron 4 toeffect the desired lateral adjustment. r1`he depth of the cutting edgeof the instrument may be adjusted by means of what is known as aY-adjustment 7 in which the nose 7 5 projects forward through an openingin the face of the frog into a hole 50 in the plate which is above theplane iron. e

The plane-iron and plate being secured together by the screw 45,movement up and down of the if-adjustment will also operate the planeiron itself. j

The face ofthe frog is provided with a perforation or recess to receivethe head of the securing screw which is thus let into the platform andallows the plane iron to have a smooth and even bearing upon the face ofthe frog. Above this recess the metal of the frog may be out out andbent back in the form of ears 27 which will provide bearings for thepivot ofthe Y-adjustment. 1n order that these ears may he bent back atconvenient angles and with as little injury to the metal as possible, itis desirable that the sides of the recess should be cut back both aboveand below the ears and at the base thereof as shown particularly in Fig.3. 1n order that the Y adjustment 7 may have a secure and even bearingand also to increase the economy and efficiency of the device, we havemade the Y-adjusting lever 7 of sheet metal as shown in Fig. 5, in which7 G, 70 are perforations in the two opposite sides of the thus be seenthat the lever has two bearings and that they are spaced apart aconsiderable distance. The lower ends or" the arms 7S coact with theadjusting nut S which opcrates on the screw S1. ln this construction asshown particularly in Fig. 6 the adjusting screw S1 is convenientlyseated in the back of the yoke at a point near the top thereof where thestrength and rigidity of' the same would be suflicient to give itasecure bearing. 1t is also desirable that the face of theirog shouldhave a reinforcing piece at the point where the cap screw 61 is attachedthereto.

in holding the yoke and the frog more securely together. The upperportion 33 of' the. back of the yoke may be cut away as appears mostclearly in Fig. 3, and thus provide an easy and convenient access forthe purpose if desired of riveting the plate 36 to the frog 2. The lowerfront end of the yoke acts also as a reinforcement to the lower irontedge or toe of the i'rog in the structure herein shown, and materiallyadds to the strength and eiiiciency 9i the parts since the pressure ofthe lower end of the cap iron 6 is applied near this point. The cuttingedge of the plane iron may be projected through' the throat or slot l0in the base of the stock portion just in front of the toe of the frog.The face of the frog is also reinforced as shown by the depressedportion 29 which in stamping the article forms a corrugation at thatpoint substantially opposite the point of application o1 the pressureapplied by the cam lever 65 at the upper end of the cap iron. The wholestructure is exceedingly light in weight and although very simple andeconomical in its construction is durable and erlicient.

The yoke 3 forms a backing for the planeiron and may be referred to insome of the claims by the term backing or frog backing, What we claimis: l. In a plane the combination of a stockportion having a throattherein for thel passage of a plane-iron, a chair at the rear of saidthroat, a sheet metal frog adapted to sit upon said chair, a plane-ironbearing against the face of said frog, a plate for said planeiron, ascrew for securing said plane-iron and said plate together', aperforation through the face of said frog forming a cavity to receivethe head of said screw the head of said screw being accessible from therear of said frog, the sides of said frog being depressed to formsupporting flanges, substantially as described.

2. In a plane the combination of a stockportion having a throat thereinfor the passage of a plane-iron, a chair at the rear of said throat, asheet metal frog sitting upon 65 lever to provide for the pivot pin. Itwill said chair, a plane-iron bearing against the 130 face of saidfrog', a plate reinforcing said plane-iron, a screw for securing saidplaneiron and said plate together, a recess in the face of said frog'forming a cavity to receive the head of said screw, pivot ears formedfrom the metal of the face of said free; and bent above said recessforming' bearings for the pivot of an adjustment lever.

3. In a plane the combination of a stochportion having a throat thereinfor the passage of a plane-iron, a chair at the rear of said throat, asheet metal frog; sitting' upon said chair, a plane-iron lyearinrragainst the face of said frog, a plate for said plane-iron, a screw forsecuring' said plane-iron and said plate together, a perforation throughthe face of said frog` forming a cavity to receive the head of saidscrew, pivot ears formed from the inetal of said frog' and above saidcavity forming bearings for the pivot of an adjustment lever, saidadjustment lever being formed of sheet metal and having' bearings in theopposite sides thereof, substantially as described.

1i. In a plane thecoinbination of a stoel;- portion having' a throattherein for the passage of a plane-iron, a raised chair at theA rear ofsaid throat, a sheet metal frog for said chair, a plane-iron bearingagainst the face of said frog, a plate over said plane-iron, a screw forsecuring said plane-iron and said plate together, a perforation throughthe face of said frog forming a cavitj.T to receive the head of saidscrew the head of said screw being accessible from the rear of saidfrog, the sides of'said frog"Y being' depressed and forming' triangular'shaped supporting iianeges for said frog resting on said chair, theforward edge of said frog` projecting downward beyond the chair andresting; on the sole back.l of the throat and forward of the chair.

In a plane, a stock-portion having a chair seat therein, a frog' adaptedto support aplane-iron and adjacent parts, the sides of said frog beingdepressed to form supporting' and reinforcing' ianges and a sheetinet-al yoke portion s cured to said frog, and means for securing` saidYyoke portion to said frog portion, substantially as described.

6. ln a plane, the combination of a stochportion, a frog' forsupporting` plane-iron, the said frog being formed of sheet metal havingthe opposite sides depressed to form upportingl and reinforcing ang'es,a yoke secured to said frog forming' a seat for said frog, and a screwsecured in said yoke portion and adapted to car y a means for adjustingthe cutting depth of plane-iron.

'7, ln a plane, a stock-portion having a chair1 therein, a sheet metal'frog' adapted to support a plane-iron, screws for securing said frog tosaid stock portion, a perforation through the face of said frog topermit of access to the said screws, a plane-iron having' a plate at thetop, thereof, a screw for securing said plate and said iron together, aperforation in the 'face of said frog to receive the head ol' saidscrew, va lever for laterally adjustineI the position of sai-dplane-iron, a depressed portion from the lace of said frog to form arecess to receive said laterally usting' lever, pivot ears struclr fromthe metal ol' said frog' and bent down to forni bearings for anadjustment lever, the metal of the face of said frog being cut awayabove and below at the sides of saidL ears, substantially as doscribed.

8. .in a plane, a stock-portion having;l a chair therein, a sheet metalfrog' adapted to support a plane-iron, screws forsecuring said frog tosaid stock-portion, a perforation through. the i ace of said frog topermit ol' access to said screws, a plane-iron having' a plate at thetop thereof, a screw for securing said plate and said iron together, aperforation in the face of said frog' to receive the head oi said screw,a lever for laterally adjusting the position of said plane-iron, adepressed portion from the face of said frog to form a recess to receivesaid laterally adjusting lever, pivot ears struclr from the metal ofsaid frog and bent down to form bearings for an adjustment lever, themetal of the 'face ol' said. frog' being' cut away at the sides of saidears, and a yolre portion secured to said frog forming a reinforcetherefor, and providing a bearing Vfor a cap screw and also a bearingfor an adjusting screw.

9. ln a plane, a sheet metal frog1 formed with depressed side flanges, asheet metal yolre having slots in the base thereof for adjusting-screws,said yolre being' bent down at the upper portion and secured to theuit-:iciL side of the Vface of said frog, substantially as described. yc) l0. ln a plane,l a sheet instal frog formed with depressed sideflanges, a sheet metal yoke having slots in the base thereof for ad justingscrews, said yoke being; bent down at the upper-portion andsecured to said frog, and a cut out portion in the face of said belowthe point of attachment of the upper end of said yoke, whereby accessmay be had to the slots in the base of said yolre, as and for thepurpose specified.

11. ln a plane, a Vfrog formed of sheet metal having the sides depressedto form supportingl flanges, a yoke 'formed of sheet metal andseparately therefrom but united to the underside ol the face thereof atthe lower end and also at the upper end by a bent down portion,substantially as described.

i2. ln a plane, a steelt-portion, a frog 'for and forming a bearing' fora plane-iron, meansY 'for securing; said frog to said stock-portion, aplane-iron secured to the face of sait frog, a plate secured to saidplane-iron, a screw for 'fastening said plate to said iron, a recess intheface of said frog' formingx a cavity to receive the head of saidscrew, bearings formed integral with said frog and above said recess, anadjustment lever formed of sheet metal and having its nose projectingupward into a hole in said plate and having bearings in the two oppositesides thereof for a pivot therefor, and'means for operating saidadjusting lever, substantially as described.

13. In a plane, a stock-portion, a frog for and forming a bearing for aplane-iron, means for securing said frog to said stock-portion, aplane-iron secured to the face of said frog, a plate secured to saidplane-iron, a screw for fastening said plate to said iron, a recess inthe face of said frog forming a cavity to receive the head of saidscrew, pivot bearing ears formed integral with said frog, the face ofsaid frcg being cut away at the sides near the upper and lower edges ofeach pivot bearing ears for the purpose specified.

14. In a plane, a stock-portion, a frog for supporting -a plane-iron, ayoke portion formed of sheet metal and secured to said frog portion andhaving slots in the base thereof for receivingl securing screws and asupport in the rear thereof for carrying` a Y- adjustment screw.

15. In a plane, a frog formed of sheet metal having a perforation nearthe top thereof to receive a screw-head, a yoke portion formed of sheetmetal and at its lower forward edge parallel to the face of said frogportion, the base of said yoke portion being bent back from the faceofsaid frog to form a bearing surface and slotted to receive securingscrews, the back of said yoke portion being adapted to form a bearingfor an adjustment lever screw, and means for securing the upper end ofsaid yoke to said frog.

16. In a plane, a frog formed .of sheet metal having a recess near thetop thereof to receive a screw-head, a yoke portion formed of sheetmetal and secured at its lower forward edge to said frogportion, thebase of said yoke portion being bent back from said frog and havingholes to receive securing screws, the back of said yoke portion beingadapted to form a bearing for an adjustment screw, the upper end of saidyoke being bent downward and forward and parallel to the face of saidfrog, and means for securing said bent down portion to said frog.

17. In a plane, a frog formed of sheet metal adapted to support a planeiron, a yoke portion formed of sheet metal and at its lower forward edgesecured to said frog portion, the base of said yoke portion having holesto receive securing screws, the back of said yoke portion being adaptedto form abearing for an adjustment screw, the upper end of said yokeforming a supporting means for a cap screw.

18. In a plane, a frog formed of sheet metal adapted to form abearing'for a plane iron, a yoke-portion formed of sheet metal andsecured at its lower edge tosaid frog portion, the base of said yokeportion havingY holes to receive securing screws, the back of said yokeportion being adapted to form a bearing for an adjustment screw, andmeans for securing the upper end of said yoke to said frog, the sides ofsaid frog being depressed to form reinforcing flanges about said yokeportion.

19. In a plane, a plane stock, a chair portion therein, a frog adaptedto carry a planeiron, a sheet metal yoke'secured to said frog Y having abase portion and being secured at its upper portion to the said frog andhaving a back portion extending from said upper portion to said base,said back portion being narrowed at the top adjacent said top portion tofacilitate attaching the said top portion to the said frog.

20. A frog for a plane said frogbeing formed of wrought metal, theopposite edges being turned downwardly, a sheet metal frog-backing tothe rear and underneath said frog, permanently secured to the frog, andmeans for removably securing the backing to the plane stock.

21. In a plane, the combination of a stock portion, a frog formed ofsheet metal and adapted to support a plane iron said frog havingdownwardly extending flanges formed integrally with its face, arearwardly extending sheet metal member carried by said frog andsubstantially parallel to the upper surface of the sole of said stockportion an upward extension therefrom secured to the back of the frogand Vmeans for securing said frog` to said stock portion whereby it maybe adjusted backward and forward on its seat. Y

22'. In a plane, a plane stock, a frog formed of sheet metal and havingreinforcing side iianges, a sheet metal frog-backing formed separatelyfrom said stock and said frog, means for securing said backing to saidfrog and means for adjustably securing said backing to said stock topermit said frog to be adjusted to and fro and a passage through thefrog to afford access to the last mentioned means.

23. A frog for a plane, said frog being i formed of sheet metal,downwardly extending integral side flanges and a separately formed sheetmetal dovmwardly extending and reinforcing backing secured to the frog.

24. A frog for planes, said frog being formed of sheet metal, a separatebacking attached thereto and extending downwardly and to the rearthereof, screws for securing said frog to the plane, a passage throughthe face of the frog to afford access to the screws, an opening in theupper part of the frog and integral lugs adjacent to said openingand alever pivoted between said lugs.

25. In a plane, a stock portion, a frog therefor formed of sheet metaland having iso a downwardly extending hacking securely Xed at the rearthereof and resting on the stock, and means for removably securing thesame thereto.

26. In a plane, the cornhination' of a stock portion, a sheet metal frogadapted to support a plane iron and a reinforcing sheet metal yokeportion secured to said frog', Said yoke portion having a downwardlyextending memeer, a forwardly extending member and a further downwardlyand forwardly eXe tending member, the latter being secured to said frogadjacent its forward lower end.

27. In a plane, a stock portion, a frog earried thereby, a plane ironand cap carried hy 15 Y said frog, a lever for adjusting said plane ironformed of sheet metal and having side arms connected by an integral1eend forming a douhle nose for engagement with the plane iron, and anadjusting member Coperating with said side arms for moving said lever.

Signed at New Britain, Conn., this 2d day of May 1902.

, CHARLES E. MTCHELL.

EDMND A. SCHADE, itnesses H. S. WALTER, W. J. WORAM.

